ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,985, issued on Oct. 27, was assigned to Leidos Security Detection & Automation Inc. (Tewksbury, Mass.).
"Chemical trace detection system" was invented by Hacene Boudries (Andover, Mass.), Troy Velazquez (Salem, N.H.), Anatoly Lazarevich (Needham, Mass.), Dmitriy Ivashin (Peabody, Mass.) and Andrew Anderson (Westford, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A chemical trace detection system includes: a drift tube; a detector disposed within the drift tube; a voltage source to produce an electrical field in the drift tube; an ionizer to establish an ionization region adjacent to the electrical field; and a desorber including a sample hold...